Time multiplexing multi-view display using slit mirror array and light emitting diode illuminated digital micromirror device

Abstract

In this paper, we propose a new approach to create a compact autostereoscopic aerial multi-view display. It employs a transmission type retroreflector, i.e. a slit mirror array (SMA), and a digital micromirror device (DMD). The retroreflector’s unique capability generates a floating image on the opposite side in a mirror-symmetric position. The SMA creates a real image of the DMD and the array of light-emitting diodes (LEDs) positioned in front of the SMA. LEDs’ real images form an array of viewpoints, enabling users to experience diverse perspectives of the three dimensional image. We successfully validate the proposed system using five LEDs with full-resolution 4-bit depth viewpoint images. We also discuss the SMA and DMD parameters’ impact on perceived images.